CVE-2020-24343 : Security Advisory and Response

Artifex MuJS through 1.0.7 has a use-after-free vulnerability in jsrun.c due to unconditional marking in jsgc.c.

Understanding CVE-2020-24343

Artifex MuJS through 1.0.7 is impacted by a use-after-free vulnerability that can be exploited through unconditional marking in jsgc.c.

What is CVE-2020-24343?

This CVE identifies a use-after-free vulnerability in Artifex MuJS through version 1.0.7, caused by unconditional marking in jsgc.c.

The Impact of CVE-2020-24343

The vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the use-after-free issue in Artifex MuJS.

Technical Details of CVE-2020-24343

Artifex MuJS through 1.0.7 is susceptible to a use-after-free vulnerability due to unconditional marking in jsgc.c.

Vulnerability Description

The vulnerability arises from improper handling of memory that can lead to a use-after-free condition in the jsrun.c file.

Affected Systems and Versions

Product: Artifex MuJS
Version: 1.0.7

Exploitation Mechanism

The vulnerability can be exploited by an attacker to trigger a use-after-free condition through unconditional marking in jsgc.c.

Mitigation and Prevention

Immediate Steps to Take:

Apply vendor patches or updates as soon as they are available.
Monitor vendor communications for security advisories related to this vulnerability. Long-Term Security Practices:
Regularly update and patch software to mitigate known vulnerabilities.
Implement secure coding practices to prevent memory-related vulnerabilities.
Conduct regular security assessments and audits to identify and address potential weaknesses.

Patching and Updates

Ensure that you apply the latest patches and updates provided by Artifex to address the use-after-free vulnerability in MuJS.